NASB also says "shall"
For example, if the church says it's ok for women to be priests, I don't think Heaven would agree as it contradicts the Word
Yes, that is a good example that helps us understand the teaching of the Church better. It is true that the bind-and-loose passages formally allow for that possibility: that the Church makes up an erroneous doctrine and the Heaven will be in a quandary: either violate this promise about binding and loosing the error in heaven, or overlook the error and bless it as truth.
The answer is that the Church simply is not going to make such decision, because the Holy Spirit leads her. Modern popes, especially, like to make this point (I paraphrase): "you want me to allow contraception? -- I cannot do that... You want me to allow women priests? -- I cannot do that".
The fact that the Catholic Church is inerrant is one corollary of these passages.
The answer is that the Church simply is not going to make such decision, because the Holy Spirit leads her. Modern popes, especially, like to make this point (I paraphrase): "you want me to allow contraception? -- I cannot do that... You want me to allow women priests? -- I cannot do that".
The fact that the Catholic Church is inerrant is one corollary of these passages.
And yet, the rcc proclaims that Mary, in spite of clear teaching in the Bible to the contrary, says she was sinless and remained a virgin. And further....catholic apologists admit this false belief cannot be substantiated in Scripture nor can they appeal to the ECFs.(catholic encyclopediaonline)
Further, Jesus says of John the Baptist, "I say to you, among those born of women there is no one greater than John; yet he who is least in the kingdom of God is greater than he.” Luke 7:28
Here was an opportunity for Jesus to elevate Mary, yet He didn't.
And catholics claim they are without error. Indeed.