Yes but which church? Surely the one to pick is one that goes by God’s word - The Bible.
Martin, the Bible itself paints a different picture of the “Word of God”
1 Peter 1:25
“
25 but the
word of the Lord abides for ever.” That word is the good news which was
preached to you."
As you can see, the
word of the Lord (aka, Word of
God) is the
preaching of the Apostles. The preaching of the Apostles is what Catholics call Sacred Tradition. Not what Jesus condemned in various parts of the Gospels, but the Traditions that were sanctioned by the Apostles themselves. In various passages such as 2 Thess 2:15; 1 Cor 11:2; and 2 Tim 2:2. So, by your definition of “the one to pick,” the one to pick would have to be one that went by the Bible (which is some Tradition that had been written down) and Tradition (or the preaching of the Apostles). The only Church around that fits the requirements is the Catholic Church. Although, I think that the Orthodox churches believe they go by Tradition as well but I’m not sure of that. At the very least we’ve narrowed it down to two!
One more thing to note about what you said. How do you determine whether or not a certain church “goes by God’s word?” How do you
know that what you see in the Bible is the correct way of interpreting it? There has to be some authority (which, by necessity, cannot be wrong) to say whether or not a certain interpretation is right or wrong. What is your authority? Usually Protestants say the Holy Spirit, this can easily be proven false by looking at the number of Protestant denominations there are today. Over 30,000 and growing. Each one claiming to go by God’s word, and each one claiming that the Holy Spirit is guiding them, showing them the correct interpretation of the Scriptures. This cannot possibly be true because denominations cannot agree on even the most important things, such as Christ’s divinity.
I think it’s obvious that the Holy Spirit does not guide everyone to the right interpretation, just look at the above example. But, Jesus did send the Holy Spirit, and the Spirit is leading
someone “into all truth” [Jn 16:13]. But who? The Apostles, that’s who. On Pentecost, Jesus fulfilled His promise to the Apostles and sent them the Holy Spirit to lead them into all truth. But we shouldn’t assume that the truth died with the Apostles, no, the Holy Spirit (and Jesus for that matter) would be with us always,
continually leading the Apostles into all truth. And that begs the question, how can the Apostles be lead into all truth if they are dead? That’s an easy one, the Apostles had successors. Successors that were taught all the truths the Apostles had and they kept that truth with them, with the help of the Holy Spirit all the way until today.
We know even today many successors to the Apostles, all Bishops of the Catholic and Orthodox churches can trace their lineage back to the Apostles. We even know every single successor of Peter. The truth has not been lost, or been left to individuals to figure out for themselves. Christ gave all truth to the Church (the Catholic Church, that is), and the Church is where it has stayed.
I’m just saying maybe “none of them have got it right”. I started to read a booklet one of them gave me but it didn’t agree with the Bible so I didn’t bother reading the rest.
I’ll agree with you in saying that the Mormons do not have it right, but as I’ve said, there is more to the Word of God than the Bible.
Which is another example of the point I’m making. A church that doesn’t go by the Bible can’t be any good, can it?
Here we get into that same conversation, Martin. You can’t go by
just the Bible. It was never meant to be the sole source of Christian doctrine. Even though it does contain most, if not all, Christian doctrine in it. Even if it’s only alluded to slightly, you just gotta know how to interpret it correctly.

Hope this helps!
Zach