Scripture
Good and upright is the LORD; therefore He instructs sinners in the way. He leads the humble in justice and He teaches the humble His way.
Observation
Here are three attributes of the Lord. One He is good. He is not just good in action. Good is who He is. He is upright. He is righteous, He never does anything wrong. And finally, His name in this verse LORD is all capitals. Which means Yahweh. This is a very sacred name for the Lord, in fact the Israelite's would only write the name and would never say it (Behind the name). The Israelite's instead would say the name Adonai which is lower case Lord (Kay Arthur, Precepts for life, Isa 1:1-6). So in the first sentence I see reverence for our God. I find this extremely insightful because fear of the Lord (reverence) is the beginning of understanding (Prov. 9:10, Psa. 111:10). When we want to receive instruction from God, we need to first come in reverence of who He is.
The verse goes on to say that God is a Teacher also. His instruction is not for the perfect in this example, but instead for the sinner. Acknowledging that you are a sinner begins with humbling yourself. It is when we humble ourselves that He will lead us in justice and teach us His way. These are promises that we can be sure of when we confess our sins and repent (1 john 1:9, 2 Chron. 7:14).
Application
Reverence for God is one of many things I feel is missing in today's society. We use God's name flippantly and offer self-righteous prayers to a God we tend to believe is impotent, but one we will gladly blame when things don't go according to our plan. We very often want God to follow us instead of us following Him. It is the culture we live in. Isaiah 1:23 say's "everyone chases after rewards". We often do that with God. We will pray for the glory, but are unwilling to wear the crown of the thorns.
I have learned the most in my life when God has humbled me and I praise Him for that. In fact I'm excited about this season of life for that very reason. In the worlds eye I am not successful and have nothing to boast about. But God grants an eternal benefit that those without the Holy Spirit cannot imagine; and each day that God wakes me up with His word I can't help but rejoice.
Prayer
God who is good, holy, and righteous, how precious our time together is to me. Your word is a lamp to my feet (Psa 119:105) it leads me through both times of rest and times of trial. I praise You O Lord, for Your mindfulness to humble me and ask that You continue to do so each and every day so that I might always receive instruction from You. I am a sinner Lord, I need Your saving grace. Wash me of my pride and lead me in paths of righteousness (Psa 23:3).