Revelation 5:1 describes the sealed scroll in God's right hand, which the Lamb takes in 5:7, directly identifying the object.

Revelation 4:2 identifies the one seated on the throne as God, from whom the Lamb takes the scroll in 5:7.

Revelation 7:10 acclaims salvation to God on the throne and to the Lamb, echoing the same throne-and-Lamb dynamic here.

Revelation 4:3 adds that the throne sitter appears like jasper and sardius, describing the one from whom the Lamb takes the scroll in 5:7.

Isaiah 6:1 depicts God on a throne, paralleling the throne scene here where the Lamb takes the scroll from the One on the throne.