LOL, Never went anywhere, RB. I always check on this forum several times a day, as well as six others where I have been posting. The newest one I joined a few weeks ago is a very large one, and I have been making a few waves there with about 350 posts so far. All you folks make up my online church, though, since I haven't got an assembly to physically meet with. Work orders are increasing also, with a new business that is directing clients my way, so my free time is shrinking.
No argument with you that God is a Spirit, which no man can see. I would think that the celestial angels CAN see God, however, or we are going to have trouble with Jesus saying about the "little ones" that "their angels do always behold the face of my Father which is in heaven" in Matthew 18:10.
But we remember that the Holy Spirit took the form of a dove alighting on Jesus at His baptism, and John gave testimony that he literally saw it. So Deity can take visible forms, as did "THE angel" who appeared in the form of a man to Manoah and his wife, and gave them commands concerning their coming child - and received worship and an offering of their hands.
We of course agree that none of these "Angel of the Lord" appearances in the OT could have been a pre-incarnate appearance of Jesus. But apparently God as "The Word" could adopt an appearance of a man when speaking to Manoah and his wife, and to Abraham, and to Joshua, and to Moses...
The "angels" of Hebrews 13:2 which were "entertained unawares" in the NEW TESTAMENT era were resurrected HUMAN messengers which had remained on earth for God's evangelistic purposes in the early church. In their travels, these "strangers" went to the saints' houses who hosted them, as found in III John.