Psalms 107:6 - Matthew Poole's English Annotations on the Holy Bible

Unto the Lord, Heb. unto Jehovah, to the true God. For the heathens, of whom he speaks, had many of them some knowledge of the true God, and did in their manner worship him with and in their idols; and especially in their distresses, when they discovered the impotency of their idols, they did direct their prayer immediately to the true God, of which there are many instances of heathen writers. He delivered them out of their distresses, in answer to their prayers, which he did not because their prayers were acceptable to him, but partly, out of the benignity and compassionateness of his nature to all his creatures; partly, to encourage and preserve the use of prayer and religion among the Gentiles, and to oblige them to a more diligent search after the knowledge of the true God, and of his worship; and partly, to give his own people assurance of his great readiness to hear and answer all those prayers which with upright hearts they offered to him according to his word.