Psalm 130:5 New King James Version (NKJV)
I wait for the Lord, my soul waits,
And in His word I do hope.
The lord promised his return one day and in that we can have comfort. Till then psalm 130 verse 5 says
I wait for the lord, my soul waits,and in his word I do hope.
Otherwise saying I have faith in the knowledge knowing of his words that I shall wait for him, as with my whole being to wait and in his word he has written and that of what he has said I put my hope.
As believers we have knowledge knowing of his return and the gift of everlasting life in faith with Christ that we look generously forward to the day of his return and the promise of being with him in this we have our whole self in faith waiting.