I will call upon the Lord, who is worthy to be praised. Not so much a simple future, "I will call upon the Lord at some particular time," as a future of continuance, "I call, and will ever call, upon the Lord, worthy to be praised;" and so—i.
e; so long as I call—shall I be saved from mine enemies (comp. Psalms 5:10, Psalms 5:12; Psalms 6:8-10; Psalms 10:15, Psalms 10:16, etc.).