Can someone who wants to go to heaven commit blasphemy?
No. Anyone who sincerely desire to go to heaven must not
blaspheme. Blasphemy is the sin of speaking lightly, derisively,
disrespectfully and dishonorably of the Lord God, His Name, His
character, His Son (the Lord Jesus), His Spirit (the Holy Spirit)
and His Word (the Bible). No one who sins the sin of blasphemy (or
any other sin for that matter) and does not repent of his/her sins
will ever be allowed to enter heaven (see Revelation 20:14-15). God
bless you, for having the desire to enter into heaven where He
lives!