This cup in this video is about the cup of suffering. Jesus drunk from the cup His father gave him. John 18:11, Then said Jesus unto Peter, Put up thy sword into the sheath: the cup which my Father hath given me, shall I not drink it?
In the Scriptures we see this cup of salvation revealed by our Lord Jesus Christ in the garden. In Matthew 20:22, 26:39.
Being a Christian will bring persecution because of the spirit warfare. He that would live godly shall suffer persecution.
In 2Timothy 1:6-9 and 2 Timothy 2:1-14 , tells us to endure hardness as a good solider, the things God has appointed for his body.
Scriptures : 1Peter 4:1-19

Yea, and all that will live godly in Christ Jesus shall suffer persecution.2 Timothy 3:12.