What is "devekut"

Devekut, debekuth, deveikuth or deveikus ( Heb. דבקות; Mod. Heb. "dedication", traditionally "clinging on" to God) is a Jewish concept referring to closeness to God. It may refer to a deep, trance-like meditative state attained during Jewish prayer, Torah study, or when performing the 613 mitzvot (the "commandments"). It is particularly associated with the Jewish mystical tradition.