[It is] God that girdeth me with strength,.... For battle, as in Ps 18:39; with strength of body and fortitude of mind; both which are from the Lord, and were in David; and were acknowledged by him as bestowed on him by the Lord; and which confirms what he had before said of him: or with spiritual strength, with strength in his soul, against sin, Satan, and the world; and to do the will and work of God: saints are girt by the Lord with the whole armour of God, and among the rest with the girdle of truth; and are prepared and ready to every good work; see 1Sa 2:4.
Hannah's song is again referred to: in 2Sa 22:33, the words are, "God is my strength [and] power"; they are true of Christ, the man of God's right hand, whom he promised to strengthen, and whom he has made strong for himself, Ps 80:17;and maketh my way perfect; or safe, or prosperous.