<P> Also there is a full genuflection, with the right knee totally given down to the level of the earth, and directly in front of the Blessed Sacrament, which for the Catholic Church is the physical presence of Jesus Christ God and the Holy Spirit . </P> <P> Some people use the humorous mnemonic device "spectacles, testicles, wallet and watch" to remember the sequence of motions, although this is frowned upon by some . </P> <P> Theodoret (393--457) gave the following instruction: </P> <P> This is how to bless someone with your hand and make the sign of the cross over them . Hold three fingers, as equals, together, to represent the Trinity: God the Father, God the Son, and God the Holy Ghost . These are not three gods, but one God in Trinity . The names are separate, but the divinity one . The Father was never incarnate; the Son incarnate, but not created; the Holy Ghost neither incarnate nor created, but issued from the Godhead: three in a single divinity . Divinity is one force and has one honor . They receive on obeisance from all creation, both angels and people . Thus the decree for these three fingers . You should hold the other two fingers slightly bent, not completely straight . This is because these represent the dual nature of Christ, divine and human . God in His divinity, and human in His incarnation, yet perfect in both . The upper finger represents divinity, and the lower humanity; this way salvation goes from the higher finger to the lower . So is the bending of the fingers interpreted, for the worship of Heaven comes down for our salvation . This is how you must cross yourselves and give a blessing, as the holy fathers have commanded . </P>

What is the significance of making the sign of the cross