Early christians were witnesses of Jesus. JWs are not. So why would they "enjoy (almighty God's) blessing and support"?
On his last evening with his disciples Jesus promised to send the Holy Spirit who would;
"Bear witness about me, and you in turn are to bear witness, because you have been with me from when I began." (Jhn.15:26,27)
Immediately prior to his ascension Jesus told them ;
"You will be witnesses of me..to the most distant part of the earth." (Acts 1:8)
Paul said that the minds of unbelievers had been blinded so that:
"The glorious good news about the Christ, who is the image of God, might not shine through. For we are preaching not ourselves but Christ Jesus as Lord." (2Cor.4:4,5)
In Revelation the dragon goes off to wage war with those who:
"Have the work of bearing witness to Jesus."
The harlot is seen to be;
"Drunk with the blood of the holy ones and with the blood of the witnesses of Jesus."
When John falls down before the angel he receives the rebuke:
"Be careful do not do that. All I am is a fellow slave of you and of your brothers who have the work of witnessing to Jesus."