Wait upon the Lord

A few days ago I replied to an email about waiting upon the Lord, and I quoted the following verses:
But they that wait upon the Lord shall renew their strength; they shall mount up with wings as eagles; they shall run, and not be weary; and they shall walk, and not faint.  (Isaiah 40:31).
Later I went to WeChat and read a post from a brother talking about the same thing waiting upon God.
Another brother asked what it means to wait upon God.
Wait upon God is to be still before God. Be still, quiet before the Lord in the morning and get strength from him. Be still before the Lord in the evening and find rest in him.
Be still, and know that I am God (Psalm 46:10)

Regarding being still before God and praying, drawing near to God, you can read the book “A simple method of prayer” written by Mrs. Guyon. I put it on this gospel website. It is pdf version and can be downloaded.

PDF book: A short and easy method of prayer