Zerahiah means Prince of the Lord. Ezra is a priest and study the the word of God. Especially Ezra was called to be the 2nd to Moses. So just as him, you must study the word of God.
If we have no relationship with God, you will not know that God choose you, and this is the first step to salvation. God's word has a powerful impact in the people around you as you apply it to your life.
Good hand meaning blessed by the Lord. He had practice what he learned.
John 14:15 If you love me, keep my commands.
Acts 13:34 God raised him from the dead so that he will never be subject to decay. As God has said,‘'I will give you the holy and sure blessings promised to David.’'
The heart in a Christian life is very sensitive in your walk with faith in God.
1 John 1:9 If we confess our sins, he is faithful and just and will forgive us our sins and purify us from all unrighteousness.
Ezra was given a power of the things to settled for God has trust in him.