The Mormon church teaches there are three levels to heaven

The Mormon church teaches there are three levels to heaven, and only those who are worthy LDS members will attain the highest level:

Telestial Kingdom – is where unbelievers go: “These are they who received not the gospel of Christ, neither the testimony of Jesus…who receive not his fullness in the eternal world”, but shall be “redeemed from the devil [at] the last resurrection” (Doctrine and Covenants 76: 82-86).

Terrestrial Kingdom – is for religious people who aren’t Mormons and for Mormons who have not met the requirements of the Church, i.e., “Honorable men of the earth who are blinded by the craftiness of men and who therefore do not accept and live the gospel law” (Mormon Doctrine, p. 784). While this level is not as desirable as the Celestial Kingdom, the presence of the Son is evident there: “These are they who receive of his glory but not of his fulness… the presence of the Son, but not the fullness of the Father…who are not valiant in the testimony of Jesus…they obtain not the crown over the kingdom of God” (Doctrine and Covenants 76: 76-79).

Celestial Kingdom – is for Mormons who have kept ALL of the laws and ordinances of their church: “These are they who received the testimony of Jesus, and believed on his name and were baptized…in the water…keeping the commandments that they might be washed and cleansed from all their sins, and receive the Holy Spirit …” (Doctrine and Covenants 76: 51-57).; “they are gods, even the sons of God…these shall dwell in the presence of God and his Christ forever…whose names are written in heaven” (Doctrine and Covenants 76: 58-68)

They use this verse in the Bible in addition to their doctrines as reference to their belief.

1 Cor 15:40 There are also celestial bodies, and bodies terrestrial: but the glory of the celestial is one, and the glory of the terrestrial is another.