147. God has as an attribute that He is true for it is written: “Let God be true and every man a liar.” Rom. iii. 4. Does the Spirit lie Who is the Spirit of Truth? S. John xvi. 13. and Whom we have shown to be called the Truth, since John called Him too the Truth, as also the Son? And David says in the psalm: “Send out Thy light and Thy truth, they have led me and brought me to Thy holy hill and to Thy tabernacles.” Ps. xliii. [xlii.] 3. If you consider that in this passage the Son is the light, then the Spirit is the Truth, or if you consider the Son to be the Truth, then the Spirit is the light.