But I will sacrifice unto thee with the voice of thanksgiving; I will pay that that I have vowed. Salvation is of the LORD.
I will sacrifice unto thee with the voice of thanksgiving. In the believing anticipation of sure deliverance he offers thanksgivings already. So Jehoshaphat (2 Chronicles 20:21) appointed singers to praise the Lord in front of the army before the battle with Moab and Ammon, as if the victory was already gained. God honours such confidence in Him. There is also heroin a mark of sanctified affliction, that he vows amendment and thankful obedience (Psalms 119:67, "Before I was afflicted I went astray; but now have I kept thy word").
I will pay that that I have vowed. Jonah ends his prayer of thanksgiving, just as the mariners ended their "sacrifice," with making "vows." True devotion of heart and deed is the same in the pagan converts as in the privileged people of God, Israel.
Salvation. The Hebrew is intensive, mighty salvation.