James 5:16 ESV
Therefore, confess your sins to one another and pray for one another, that you may be healed. The prayer of a righteous person has great power as it is working.
1 Timothy 2:1 ESV
First of all, then, I urge that supplications, prayers, intercessions, and thanksgivings be made for all people,
Revelation 5:8 ESV
And when he had taken the scroll, the four living creatures and the twenty-four elders fell down before the Lamb, each holding a harp, and golden bowls full of incense, which are the prayers of the saints.
It appears that we are to pray for one another and that the elders in heaven pray for us.
So for us to ask for the intersession of the saints in heaven seems to be in accordance with the scripture and not any different than asking for our pastor or anyone else to pray for us.