Jesus affirms God’s divinity in the New Testament by referring to God as His God too rather than attributing himself with divinity. “Go to my brethren, and say unto them, I ascend unto my Father, and your Father; and to my God, and your God.” (John 20:17)
Jesus affirming that God is one in the book of Matthew
“And, behold one came and said unto him, Good Master, what good things shall I do, that I may have eternal life? And he said unto him, Why callest thou me good? There is none good but one, that is, God: But thou wilt enter into life, keep the commandments (Matt. 19:16-17)
Another affirmation in Mark: “One of the scribes came. and asked him, which is the first commandment of all? And Jesus answered him , The first of all the commandments is, Hear O Israel, the Lord, our God, is One Lord: and thou shall love the Lord, thy God, with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: This is the first commandment.. And the scribe said unto him, Well, Master, thou hast said the truth; for there is One God; and there is none other but He.” (Mark 12:29-30 & 32)