Of course not, since it is the quality of love never to cease loving. We know from Scripture that at least the saints continue to pray. We also know that Jesus is the Great High Priest Who continually intercedes for us. Now Christians are called to follow Christ, and to be His co-workers. This is the Biblical basis for asking for the saints intercessions, something which should never be confused with witchcraft.
Witchcraft seeks to conjure up the dead.
Such a practice is condemned in the Bible. When the Orthodox Christian asks the saints in heaven for their intercession, he or she is not trying to conjure up the dead. Rather, they are simply asking them for their continual support in prayer, and they believe that the Holy Spirit will let them know of such a request. To believe that all encounters or attempts to speak with the departed are evil acts would be to accuse the Lord Jesus Christ Himself of such a sin, since He spoke to Moses and Elijah on the holy mountain. First of all, in the same way that asking our fellow Christians on earth to pray for us, can.