Sorry but both you and Calvin are wrongIf you actually went to the cited work, and continue reading what was said about verse 4, you will see why you are wrong. It is clearly defined by Calvin why it is a big deal that Paul said "in Christ". In fact, let me put it here:
continuation of verse 4 explanation:
"In Christ. This is the second proof that the election is free; for if we are chosen in Christ, it is not of ourselves. It is not from a perception of anything that we deserve, but because our heavenly Father has introduced us, through the privilege of adoption, into the body of Christ. In short, the name of Christ excludes all merit, and everything which men have of their own; for when he says that we are chosen in Christ, it follows that in ourselves we are unworthy.
That we should be holy. This is the immediate, but not the chief design; for there is no absurdity in supposing that the same thing may gain two objects. The design of building is, that there should be a house. This is the immediate design, but the convenience of dwelling in it is the ultimate design. It was necessary to mention this in passing; for we shall immediately find that Paul mentions another design, the glory of God. But there is no contradiction here; for the glory of God is the highest end, to which our sanctification is subordinate."
So yes, men are chosen in Christ without condition/merit. If there was a condition, then that means we can be worthy...except we can't.
further down in explanation of verse 4:
"We learn also from these words, that election gives no occasion to licentiousness, or to the blasphemy of wicked men who say, "Let us live in any manner we please; for, if we have been elected, we cannot perish." Paul tells them plainly, that they have no right to separate holiness of life from the grace of election; for
"whom he did predestinate, them he also called, and whom he called, them he also justified." (Romans 8:30.)
The inference, too, which the Catharists, Celestines, and Donatists drew from these words, that we may attain perfection in this life, is without foundation. This is the goal to which the whole course of our life must be directed, and we shall not reach it till we have finished our course. Where are the men who dread and avoid the doctrine of predestination as an inextricable labyrinth, who believe it to be useless and almost dangerous? No doctrine is more useful, provided it be handled in the proper and cautious manner, of which Paul gives us an example, when he presents it as an illustration of the infinite goodness of God, and employs it as an excitement to gratitude. This is the true fountain from which we must draw our knowledge of the divine mercy. If men should evade every other argument, election shuts their mouth, so that they dare not and cannot claim anything for themselves. But let us remember the purpose for which Paul reasons about predestination, lest, by reasoning with any other view, we fall into dangerous errors."
(The dangerous errors include the idea that we have any merit before God to attain our salvation.)
Scripture tells us how the Ephesians were placed in Christ
Eph. 1:13 —ESV
“In him you also, when you heard the word of truth, the gospel of your salvation, and believed in him, were sealed with the promised Holy Spirit,”
Men are in Christ when they hear and believe
Forget Calvin and listen to the bible