ISAIAH 40:30-1 “EVEN YOUTHS GROW TIRED AND WEARY, AND YOUNG MEN STUMBLE AND FALL; BUT THOSE WHO HOPE IN THE LORD WILL RENEW THEIR STRENGTH. THeY WILL SOAR ON WINGS LIKE EAGLES; THEY WILL RUN AND NOT GROW WEARY.”
One attribute of a person of God is FAITHFULNESS. You can count on him to follow through and stick with it till the job is done. As suggested here, it is God’s FAITHFULNESS, His sticking with us, that gives us the STRENGTH to be faithful to complete our task.