Learning to do God's will

“Teach me to do Your will, for You are my God; may Your good Spirit lead me on level ground.” Psalm 143:10
Sometimes we think of God’s will as some enormous thing that is too far beyond our reach to even try to grasp. We think of it as some complex, infinite thing that can’t be nailed down – and in some aspects, it is. But in other aspects, the Bible shows us that it is possible for us to learn God’s will and know it.
The key, we are told here, is to be guided by the Holy Spirit. This is His role: to guide us into all truth (John 16:13). God’s will is called good, pleasing, and perfect (Rom. 12:2), and we can know it as our minds are transformed by the Holy Spirit. Doing the will of God then becomes quite easy: if we are following the Spirit in obedience, and have no unrepentant sin in our hearts, then wherever we are is in God’s will.
Another point to note here is this: God’s Spirit is called ‘good’. This reminds me of how Jesus responded to the rich young ruler, who addressed Him as ‘Good teacher’ (Mark 10:17). “Why do you call me good?” Jesus answered. “No one is good – except God alone” (Mark 10:18). What Jesus is saying here, is that ‘good’ is only to be used to describe God. The man, addressing Jesus as ‘good’, was either consciously or unconsciously, calling Him God. Likewise, the Holy Spirit is also God, in the Trinity, and by that very nature, He is always good.