He brought me forth also into a large place - Instead of being hemmed in by enemies, and straitened in my troubles, so that I seemed to have no room to move, he brought me into a place where I had ample room, and where I could act freely. Compare the note at Psalm 4:1.
He delivered me - He rescued me from my enemies and my troubles.
Because he delighted in me - He saw that my cause was just, and he had favor toward me.

He brought me forth also into a large place - He enabled me to clear the country of my foes, who had before cooped me up in holes and corners. This appears to be the allusion.

He brought me forth also into a large place; (p) he delivered me, because he delighted in me.
(p) The cause of God's deliverance is his favour and love for us.

He brought me forth also into a large place,.... Into heaven, a place of the glorious liberty of Christ, after his captivity to death and the grave, whither he ascended leading captivity captive, and of the children of God; and a spacious place, where there is room enough for Christ and all his people; here he now is, and will remain till his second coming, and from hence we expect him; see John 14:2. Compare with this Psalm 31:8;
he delivered me, because he delighted in me; God delivered David from all his enemies, because he was a man after his own heart, in whom he delighted; not for any merit and worthiness in him, but of his good will and pleasure: he delivered Christ because he was his elect, in whom his soul delighted; and who was daily his delight, rejoicing in his presence before the world was: and he delivers his church and people, because they are his Hephzibah, in whom is his delight, Isaiah 62:4; the Father delighted in them, and therefore chose them to salvation; the Son delighted in them, and gave himself for them, and ransomed them out of the hands of him that is stronger than they; the Holy Spirit delighted in them, and therefore regenerates, renews, and sanctifies them, and seals them up unto the day of redemption.

a large place--denotes safety or relief, as contrasted with the straits of distress (Psalm 4:1). All his deliverance is ascribed to God, and this sublime poetical representation is given to inspire the pious with confidence and the wicked with dread.

Brought - Out of my straits and difficulties, into a state of freedom and comfort. So he ascribes all his mercies to God's good pleasure, as the first spring of them.