Revelation 14:3-4 And they sang as it were a new song before the throne, and before the four animals, and the elders: and no man could learn that song but the hundred and forty and four thousand, which were redeemed from the earth.

CKJV_Strongs⁽ⁱ⁾

3 G2532 And G103 they sang G5613 as it were G2537 a new G5603 song G1799 before G2362 the throne, G2532 and G1799 before G5064 the four G2226 animals, G2532 and G4245 the elders: G2532 and G3762 no man G1410 could G3129 learn G1487 that G5603 song G3361 but G1540 the hundred G5062 and forty G5064 and four G5505 thousand, G3588 which G59 were redeemed G575 from G1093 the earth.

4 G3778 These G1526 are G3739 they which G3435 were G3756 not G3435 defiled G3326 with G1135 women; G1063 for G1526 they are G3933 virgins. G3778 These G1526 are G3588 they which G190 follow G721 the Lamb G3699 wherever G302 G5217 he goes. G3778 These G59 were redeemed G575 from G444 among men, G536 being the firstfruits G2316 to God G2532 and G721 to the Lamb.