trust in the Lord with all thine heart, and lean not under thine own understanding."
So when he talks about our own understanding in verse 5, that's contrasted with the good
understanding of verse 4 that comes from the truth of God's Word, that comes from His commandments,
that comes from God's law.
See that's where we get good understanding from reading the Bible, from getting God's
commandments and God's laws and walking in those ways, then the Bible says lean on that,
trust that, don't trust in your own understanding, in all your ways acknowledge Him and He shall
direct thy paths.
What's being taught here is that if we read the Bible, study the Bible, learn the Bible,
and then we strive to obey God's Word in our lives, not to do things our way, but to do
things His way, God will direct our paths. God will lead us.
So you say, "Well, does the Bible have all the answers for my life? Is it going to tell
me every decision that I need to make?" It's not going to spell out specifically what to
do in every situation, but if we follow what the Bible says, He will direct our paths and
guide our decisions and make sure that we end up where He wants us to be.