John Gill Commentary Luke 9:60

"But he said unto him, Leave the dead to bury their own dead; but go thou and publish abroad the kingdom of God." — Luke 9:60 (ASV)

Jesus said to him, let the dead bury the dead
(See Gill on Matthew 8:22).

but go you and preach the kingdom of God ;
that the kingdom of heaven is at hand, the Gospel dispensation is now ushering in, and the kingdom of the Messiah is setting up; go and publish the things concerning the kingdom of grace, which lies not in outward rites and ceremonies, but in righteousness and peace, and joy in the Holy Ghost; and declare the things relating to the kingdom of glory, and eternal life and happiness; assert, that unless a man is born again, and has a better righteousness than his own, he is neither fit for, nor has he a right unto everlasting bliss.