Are you saying that these things are "unbiblical"?
Let's examine what the Bible - and linguistics has to say . . .
First of all - to "Pray" simply means to ASK. I get really tired of posting this because it SHOULD have sunk in by now . . .
Merriam-Webster’s Collegiate Dictionary
Pray
verb \ˈprā\
Full Definition of pray
transitive verb
1: entreat, implore —often used as a function word in introducing a question, request, or plea<pray be careful>
2: to get or bring by praying
intransitive verb
1: to make a request in a humble manner
2: to address God or a god with adoration, confession, supplication, or thanksgiving
As you can see - "worship" is a SECONDARY definition. The PRIMARY definition is "ASK". We ASK those in Heaven to pray FOR us - just as those in Heaven take our prayers before God in Rev. 5:8.
If you want to get technical - here are 135 examples of JESUS - praying to other humans . . .
(Matt. 5:46, Matt. 5:47, Matt. 6:27, Matt. 6:28, Matt. 7:3, Matt. 7:16, Matt. 8:26, Matt. 9:4, Matt. 9:5, Matt. 9:15, Matt. 9:28, Matt. 11:7, Matt. 11:16, Matt. 12:11, Matt. 12:29, Matt. 12:34, Matt. 12:48, Matt. 14:31, Matt. 15:3, Matt. 15:34, Matt. 16:9, Matt. 16:13, Matt. 16:15, Matt. 16:26, Matt. 17:17, Matt. 17:25, Matt. 18:12, Matt. 19:17, Matt. 20:21, Matt. 20:22, Matt. 20:32, Matt. 21:25, Matt. 21:28, Matt. 21:42, Matt. 22:18, Matt. 22:42, Matt. 23:17-19, Matt. 23:33, Matt. 26:10, Matt. 26:40, Matt. 26:53, Matt. 26:54, Matt. 26:55, Matt. 27:46, Mark 2:8, Mark 4:21, Mark 4:30, Mark 4:40, Mark 5:9, Mark 5:30, Mark 5:39, Mark 7:18, Mark 7:18, Mark 8:12, Mark 8:17-18, Mark 8:19, Mark 8:20, Mark 8:21, Mark 8:23, Mark 9:12, Mark 9:33, Mark 9:50, Mark 10:3, Mark 10:18, Mark 10:51, Mark 12:15, Mark 13:2, Mark 14:37, Mark 14:37, Luke 2:49, Luke 2:49, Luke 5:22, Luke 5:23, Luke 6:46, Luke 8:25, Luke 8:30, Luke 8:45, Luke 10:15, Luke 10:26, Luke 10:36, Luke 11:40, Luke 12:14-15, Luke 12:25, Luke 12:57, Luke 14:31, Luke 14:34, Luke 15:4, Luke 15:8, Luke 16:11, Luke 17:17, Luke 18:7, Luke 18:8, Luke 22:27, Luke 22:46, Luke 23:31, Luke 24:17, Luke 24:19, Luke 24:26, Luke 24:38, Luke 24:41, John 1:38, John 2:4, John 3:10, John 3:12, John 4:7, John 5:6, John 5:44, John 5:47, John 6:5, John 6:61, John 6:62, John 6:67, John 6:70, John 7:19, John7:19, John 7:23, John 8:10, John 8:43, John 8:46, John 8:46, John 10:36, John 11:9, John 11:26, John 11:33, John 13:12, John 14:9, John 18:4,7, John 18:11, John 18:34, John 18:21, John 18:23, John 20:15, John 21:5, John 21:17, John 21:22)
Strike ONE . . .
As for the term "Holy" Father - the word "Holy" simply means to be "set apart".
We are ALL called to be holy (Lev. 11:45, Heb. 12:14, 1 Pet. 1:15, Rev. 22:11), so I'm NOT sure why you would have a problem with this . . .
1 Pet. 1:15-16 says explicitly:
ut just as he who called you is holy, so be holy in all you do “Be holy, because I am holy.”
Strike TWO . . .
Finally - as to Purgatory - this is a BIBLICAL concept.
Since Rev. 21:27 tells us that nothing unclean can enter heaven, a final purification or purgation is necessary for some before entering heaven.
In 2 Macc. 42-46, we see that Judas Maccabeus prays for the men of his army, killed in battle. Verse 44 says, “… for if he were not expecting the fallen to rise again, it would have been useless and foolish to pray for them in death.”
Matt. 5:25-26 tells us that unless we have settled our matters, we will be “handed over to the prison guard and will not be released until we have paid the last penny.”
We are told in 1 Cor. 3:12-15 that the day (judgment) will disclose the foundation that a person builds upon and how it will be revealed: “If the work stands that someone built upon the foundation, that person will receive a wage. But if someone's work is burned up, that one will suffer loss; the person will be saved, but only as through fire.”
This can't be Heaven because the person is suffering.
This can't be Hell because the person WILL BE saved.
This is describing a THIRD state - PURGATION/PURIFICATION.
Additionally, Matt. 12:32 states, “whoever speaks against the Holy Spirit will not be forgiven, either in this age or in the age to come”, which indicates that there is purification after death for some. Matt. 18:32-35 and Luke 12:58-59 are additional verses that support this doctrine.
Strike THREE . . .