Psalm 57

Kyle Heironimus

To the choirmaster: according to Do Not Destroy. A Miktam of David, when he fled from Saul, in the cave.

Be merciful to me, O God, be merciful to me,
    for in you my soul takes refuge;
in the shadow of your wings I will take refuge,
    till the storms of destruction pass by.
I cry out to God Most High,
    to God who fulfills his purpose for me.
He will send from heaven and save me;
    he will put to shame him who tramples on me. Selah
God will send out his steadfast love and his faithfulness!

My soul is in the midst of lions;
    I lie down amid fiery beasts—
the children of man, whose teeth are spears and arrows,
    whose tongues are sharp swords.

Be exalted, O God, above the heavens!
    Let your glory be over all the earth!

They set a net for my steps;
    my soul was bowed down.
They dug a pit in my way,
    but they have fallen into it themselves. Selah
My heart is steadfast, O God,
    my heart is steadfast!
I will sing and make melody!
    Awake, my glory!
Awake, O harp and lyre!
    I will awake the dawn!
I will give thanks to you, O Lord, among the peoples;
    I will sing praises to you among the nations.
For your steadfast love is great to the heavens,
    your faithfulness to the clouds.

Be exalted, O God, above the heavens!
    Let your glory be over all the earth!

This psalm gives some insight into David being “a man after [God’s] heart” Acts 13:22. He’s hiding from Saul in a cave, in danger, and he

  • Asks for mercy (v1)
  • Mentions taking refuge in God, in the shadow of his wings. Not in his army or the cave. (v1)
  • Cries out to God. (v2)
  • Implies that this trouble is part of God’s purpose for him. (v2)
  • Says God will “send from heaven and save me.” (v3)
  • Mentions his enemies, in this case Saul and his army (v4-6)
  • In the middle of talking about his enemies, he exalts God (v5)
  • Says he is steadfast and sings and praises God (v7-9)
  • Refers to the greatness of God’s steadfast love (v10)
  • Exalts God (v11)

The fact that all this goes on in a short passage while David is hiding from Saul in a cave is what’s striking. This barely mentions Saul and does not once ask God for help. He does say that his enemies will fail (fall into a pit in verse 6) but does not even ask for this, as he does other places.

It’s a good reminder of how we can approach God during a trial if we have the proper attitude. It’s probably not natural for most of us, but we can pray that it becomes so.

Away – Poem

John Heironimus

The original/placeholder title of this poem was Wander Not, I Beseech Thee. I wrote this poem on November 1, 2023. I selected it, somewhat at random, as my first post on Welling Up.

Away

Away, away, I’ve drifted away

I no longer feel as I should today 

What’s this I have done in my fear or pride?

Oh how I wish it was no longer inside

Away, away, I’ve been looking away

When I should be gazing upon His face

I say “nothing’s better than reading His Word”

But when called by conviction I pretend I’ve not heard 

Away, away, I’ve pushed them away

The ones who might help me through this fray

I fear that I will be left all alone

Questioning myself and all that I’ve done

~~~~~

And then I’m reminded, my worth is not me

My worth is not found in what man’s eye can see

My worth is not based on what I have done 

My only worth comes from God’s only Son

Bare cross, empty tomb, victorious King

Saints all to Him their golden crowns bring

Thrice holy Lamb is worshipped by all

At His feet the faithful ones fall

~~~~~

Away, away, He washed it away

No longer must I from my Savior stray

In His arms he holds me fast

And guides me till I’m home at last

Close Enough

Kyle Heironimus

My college math dilemma

I was reading this post by John D. Cook and it got me thinking about math and measuring errors.

I distinctly remember the first time I was bothered by measurement error. It was in a college calculus class. The problem was something like “If a carton of milk has 1 PPM of bacteria, the bacteria  grows at a rate of 5 percent per day, and the milk is spoiled when it reaches 5 PPM of bacteria, how long before the milk is spoiled?”, but the details don’t matter.

I was used to problems like “If you have a wall 8 feet by 20 feet and paint covers the wall at a rate of 1 gallon per 100 square feet, how many gallons do you need?”

Can you see the difference that I saw?

Here is what I thought then. The bacteria problem is widely speculative. First of all, how do we know there are exactly 1 PPM bacteria? Secondly, we know bacteria reproduces at different speeds based upon temperature. What if the temperature varied even slightly over the course of the experiment? And certainly bacteria on average may reproduce at a rate of 5 percent per day, but that cannot be exact. They are living things. Some might be better than others at reproducing. Some might die quicker. How can we say “5 percent per day”?

However, the paint example is precise, right? You can measure a wall exactly. You can measure paint coverage rates exactly, right? They are just material properties. No variance depending upon growth rates or differences in cells.

So it really bothered me that I had to answer the milk problem. I mean, I could give an answer that was close, but this was math class. I needed an exact answer.

I went ahead and answered it, but it bothered me. As my time at college progressed and I took more and more engineering courses, I had to answer more and more questions like this. Why even bother with all this engineering and math stuff if we are only spitting out close answers, not right answers?

Well, let me tell you two things that I learned later, but wish I would have learned earlier.

You will never get the right answer

Yep. That’s right. Never. In Mathtopia you can get exact answers, but not here in the real world. You know why? GIGO. Garbage in, garbage out. From the paint example above, you will get the wrong answer if you say “1.6 gallons”. Why? Do you really know how much paint you have? Is it really exactly 1.6 gallons? Or is it maybe a little more or a little less? Who measured it? What about the wall size? Is there really a wall on earth that is exactly 8 feet by 20 feet? 96 inches by 240 inches?  2438.4 mm by 6096mm? Is it perfectly square? Are the 4 sides perfectly straight? Of course not.

When you come right down to it, this is just like the milk example. The only difference is that  I was accepting that in Mathtopia, we knew the exact size of the walls and the exact coverage of the paint. If we lived in Mathtopia, we could have exact answers. Unfortunately, the world of Mathtopia only exists in math books.

So where do we go from here? Why even bother if we can never get the right answer? That leads to point two.

It’s close enough

I don’t know about you, but I can only go to Lowe’s and buy paint in 3 sizes: 1 quart, 1 gallon, or 5 gallons. How much paint do we need for the problem above? 8 feet x 20 feet is 160 square feet, at 100 square feet per gallon means 1.6 gallons, right? Now go to Lowe’s and ask for 1.6 gallons of paint and see where that gets you. Maybe you can get exactly 1.6 gallons of paint in Mathtopia, but not at my Lowe’s.

In this case, you would get 2 gallons. Yes, you could technically buy 1 gallon and 3 quarts, 1.75 gallons, with .15 gallons to spare, but the 3 quarts will cost more than 1 gallon. I always buy a gallon, even if I only need a quart. It’s a well-known fact that when you own a house, it’s mandatory that you have lots and lots of leftover gallon paint cans. That way, when you need to touch up a spot, you can spend a few hours looking through them not quite sure which one is the proper match. And when you find the proper match, it will be mostly dried out and have rust from the lid floating in it. Trust me, you need two gallons. But I digress…

I haven’t addressed other questions that need to be answered, such as “Are you are painting with, a brush, roller, or sprayer?”,  “Is the wall textured?”,  “Are you covering a dark color with a light one?”,  “Is it just an experienced adult painting or are you letting your eight-year-old help?”, “Are you going to use one or two coats?”

How you answer every one of those questions will affect how much paint you need in the real world. So what you should probably do here is get two gallons and move on.

 

Oh, and if the milk is near the expiration date, doesn’t smell quite right, or you are just not sure, you should probably throw it out. No need to check the bacteria levels.

Ferguson

Kyle Heironimus

As a kid, I used to spend weeks with my cousins in Riverview Gardens, a suburb of St. Louis. Just a few miles away is a town called Ferguson.

In light of all the news about the upcoming grand jury decision in Ferguson, here is a good post from this summer from John Piper.