Is it wrong for me to baptize my brother's Protestant baby?

[JustinMartyr100]

Hello. My brother just had a baby. He is Protestant, and they follow believers Baptism. Would it be wrong for me to Baptize the baby if I ever get a chance when no one is looking, just in case, for example, they get into a car accident and something happens? Thank you!

 

[Reginald_Plum]

Justin,

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