SBF:
And often quoted to “show a waiting attitude”.
Micah 7:7
But as for me, it is for Jehovah that I shall keep on the lookout. I will show a waiting attitude for the God of my salvation. My God will hear me.
Also sometimes used in the same context is Psalm 4:4:
Be agitated, but do sin. Have your say in your heart, upon your bed, and keep silent.
Ps. 37:7:
Keep silent before Jehovah and wait longingly for him.
and elsewhere in the Psalms (42:5, 11; 43:11; 62:5; 71:14; 119:49; 131:3, in addition to blondie's ref. above). It's a regular theme there.
I can't help but think of the parallel that whatever ancient Israelites are really responsible for writing the Psalms (no Fred Franz fantasies here), they were bummed out about the corruption that they had to endure "up top" like so many Witnesses (and ex-JWs) are today.