Should we pray for someone's salvation? Today a Pastor on a local TV (in India) was preaching that we need not pray for someone's salvation. Salvation is something that belongs to God and His Plans. He also said that nowhere in the New testament are believers requested to pray for sinners or to ask God for a non-believer's salvation.

He said the plan of salvation by God is already fulfilled, and we only preach the Gospel and live a model life for unsaved people to come to our Lord. 

Revealtion 19:1 says,


  19 After these things I heard a loud voice of a great multitude in heaven, saying, “Alleluia! Salvation and glory and honor and power belong to the Lord.


If salvation belongs to the Lord, praying for someone's salvation would become absurd, correct?

PS: I found another question  Praying for someone&#39;s salvation. Is there a point? but that was asked in a bit different approach. If this question still seems irrelevant, kindly close it or merge it. Thanks.
To make an assertion that Christians should not do something, one must appeal to an authoritative source, most likely the Bible.  Nowhere in the Bible are we commanded not to pray for the salvation of unbelievers, and that is quite problematic to the argument.  Indeed, if we are not supposed to do something, would God not have mentioned it somewhere instead of leaving it up to us to figure out based on obscure logic?

In reality, the apostle Paul gives us an example for us to pray that others may be saved.  He specifically prays for Jewish unbelievers, and his prayer is specifically for their salvation.  While he does not specifically request others to do so, it would be quite a stretch to assert that this was only something Paul did that no one else was supposed to do.


  Brothers, my heart's desire and prayer to God for them is that they
  may be saved.  Romans 10:1 ESV


Indeed, if God answers prayer, it would be difficult to find something to pray for in which He is more glorified than in someone responding to Jesus in faith.

Salvation does, indeed, come from God.  It is He who does the saving, so it's His salvation in that it comes from Him.  Yet, it is our salvation in that we are the ones saved by it.