In Psalm 40 David looks both backward and forward as he considers his need for God. He speaks about what God has done in his life and how faithful God is. David has confidence in the future because he knows all that God has done for him in the past.

1 I waited patiently for the Lord to help me,
and he turned to me and heard my cry.
2 He lifted me out of the pit of despair,
out of the mud and the mire.
He set my feet on solid ground
and steadied me as I walked along.
3 He has given me a new song to sing,
a hymn of praise to our God.
Many will see what he has done and be amazed.
They will put their trust in the Lord.
Psalm 40:1-3 NLT

Dear shepherd leader, think back on what God has done in your life, the many wonderful things He has done for you and how this is proof that He will be at work in you continually. As David reminds us, we must wait patiently on the Lord for He is faithful and true.