Wait for the LORD;
be strong,
and let your heart take courage;
wait for the LORD!
Though I've primarily been using ESV for the verse quotes I insert here, in this case I love the KJV even better:
be of good courage,
and He shall strengthen thine heart:
wait, I say, on the LORD.
Elisabeth Elliot: "Waiting on God requires the willingness to bear uncertainty, to carry within oneself the unanswered question, lifting the heart to God about it whenever it intrudes upon one's thoughts."
While You wait in gracious wisdom and my doubts begin to rise,
I recall Your loving kindness, and lift my hopeful eyes.
While Your hand withholds the answer, I will not withhold my heart.
I will love you in Your silence, I will trust You in the dark.
(Eileen Berry)