First Timothy 2:5 teaches that there is one mediator between God and humanity, Christ Jesus.
Catholics affirm that completely.
So why ask saints to pray?
Read the surrounding passage
Immediately before the statement about Christ's unique mediation, Paul urges Christians to offer prayers and intercessions for others.
That means one Christian praying for another does not compete with Christ's unique mediation.
It participates in Christian prayer because of Christ.
The Catholic argument
If asking a Christian friend:
"Please pray for me"
does not replace Jesus, Catholics argue that asking a Christian in heaven to pray likewise does not replace Him.
All Christian intercession depends upon Christ.
The real disagreement
Most Protestants do not object to asking living Christians for prayer.
The disagreement concerns whether Christians in heaven:
- remain consciously united to Christ and His Church;
- can intercede for Christians on earth;
- can be addressed with requests for prayer.
Those questions should be examined from Scripture and early Christian history.
Revelation and heavenly prayer
Catholics point to scenes in Revelation involving heavenly figures and prayers before God.
Protestants often respond that such passages do not explicitly command Christians on earth to address departed saints.
That is the actual debate.
A more precise question
Does Christ's unique mediation eliminate all subordinate Christian intercession --- or is Christian intercession possible precisely because we participate in Christ?
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