Yes, it's a common objection that if Jesus Christ is God, why did He not clearly and directly declare it? The argument that Jesus never explicitly says the words "I am God" and therefore cannot be fully divine misunderstands the way Jesus communicated His identity and the way Scripture reveals theological truths.
And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ. - 1 Thess. 5: 23
For the word of God is quick, and powerful, and sharper than any two-edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart. - Hebrews 4 : 12
God is a Spirit - John 4: 24
The reason that JW's and others that except their heresy have a hard time accepting that Jesus is God is not because they have a hard time imagining the nature of God. It is because, they cannot imagine their own nature... they reject the biblical definition of the nature of man. For a secularist, their most highly protected pet belief is that when you die, you will be unconscious. The biblical idea that a person will still be conscious somewhere for eternity, is utter terror for them to accept. For them, that reality must be suppressed at all cost.
The chart above clearly illustrates how Jesus (using scriptural definitions) is both fully man and fully God at the same time.
This explains so-called "contradictions" that those using secular definitions of words must ignore to promote the concept that Jesus was less that God ... like:
1. Jesus has all power in heaven and earth, yet his father is greater than he
2. No one knows the day of the hour except the father
3. How could he resurrect himself from the dead as he predicted, while he was dead.
Not only did Jesus rightly accept worship, forgive sins and accept people calling him "God",(Jn. 20:28); he did something that no one could duplicate unless they were God... resurrect himself from the dead, while he was dead.
I lay down my life, that I might take it again....No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again....And many of them said, He hath a devil, and is mad; why hear ye him? Others said, These are not the words of him that hath a devil. Can a devil open the eyes of the blind? - John 10: 17-21
While people struggled with Jesus' miracles and predictions before he was cricified, most understood his nature perfectly clear after he resurrected himself from the dead.