1 Thessalonians 4:15
For we say this to you by [the authority of] the word of the Lord [Note: Paul was either quoting what Jesus had previously said, or was giving a revelation he had received from the Lord. See I Cor. 14:37], that we [Christians] who are [still] alive, who are left [on earth] when the Lord returns, will certainly not precede those who have fallen asleep. [Note: The point Paul is making is that the living will not be "changed" (I Cor. 15:51-52) and taken to heaven before the dead are raised].
Revelation 8:3
Then another angel, who held a golden incense holder, came and stood at the Altar. He was given a quantity of incense to add to the prayers of all the saints [as an offering] on the golden Altar, which was in front of the throne.