βαθύνω (< βαθύς), [in LXX for עמד: Refs Psa.91 (92):5, Jer.29 (49):8 30(49)30 * ;] to deepen: Luk.6:48.† (AS)
Thayer:
1) 'the deep' sea (the 'high seas') 2) deep, extreme poverty, the deep things of God, things hidden and above man's scrutiny, especially divine counsels 3) to make deep