'Eternal' in the Bible

but whosoever shall blaspheme against the Holy Spirit hath never forgiveness, but is guilty of an eternal sin:

And as he was going forth into the way, there ran one to him, and kneeled to him, and asked him, Good Teacher, what shall I do that I may inherit eternal life?

but he shall receive a hundredfold now in this time, houses, and brethren, and sisters, and mothers, and children, and lands, with persecutions; and in the world to come eternal life.