Actually Satan can and does work "miracles as we see in Exodus 7:11, "Then Pharaoh also called the wise men and the sorcerers: now the magicians of Egypt, they also did in like manner with their enchantments."
And we are warned that Satans deception will continue until the end
"And deceiveth them that dwell on the earth by the means of those miracles which he had power to do in the sight of the beast; saying to them that dwell on the earth, that they should make an image to the beast, which had the wound by a sword, and did live." —Revelation 13:14
"For they are the spirits of devils, working miracles, which go forth unto the kings of the earth and of the whole world, to gather them to the battle of that great day of God Almighty." —Revelation 16:14
We ask holy people who have died and we believe are in heaven to intercede to God on our behalf. If it is God’s will that we should receive that particular miracle, He will allow it to show us that the holy person was pleasing to Him by his virtue and life, and that they are a good example to emulate for our own faith journey.
Do we have NT scriptural examples of that????
Truth is that the 'saint" gets all the glory.. not God
We are told we do not need any intercessor but Christ... and that we can go directly to God in prayer
Heb 4:15For we do not have a high priest who cannot sympathize with our weaknesses, but One who has been tempted in all things as we are, yet without sin. 16Therefore let us draw near with confidence to the throne of grace, so that we may receive mercy and find grace to help in time of need.
bump
Let’s look at some more examples:
2 Thessalonians 2:9:9 The coming of the lawless one is by the activity of Satan with all power and false signs and wonders
Matthew 24:24 For false christs and false prophets will arise and perform great signs and wonders, so as to lead astray, if possible, even the elect.
Of course if you whittle away at Scriptural authority by adding tradition you wind up believing in all sorts of nonsense.