4 When he has brought out all his own, he goes before them, and the sheep follow him, for they know his voice.
5 A stranger they will not follow, but they will flee from him, for they do not know the voice of strangers." - John 10:4-5
His sheep do not follow a stranger. Your view contradicts that.
I am the good shepherd. The good shepherd lays down his life for the sheep. - John 10:11
The shepherd dies for His sheep.
14 I am the good shepherd. I know my own and my own know me,
15 just as the Father knows me and I know the Father; and I lay down my life for the sheep. - John 10:14-15
And here's where you start to divide the Trinity. If the relationship between the sheep and the shepherd is the same as between the Father and Son, then it cannot be divided.
27 My sheep hear my voice, and I know them, and they follow me.
28 I give them eternal life, and they will never perish, and no one will snatch them out of my hand. - John 10:27-28
He gives His sheep eternal life. If salvation can be lost, then it's not eternal life He gives them.
29 My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father's hand.
30 I and the Father are one." - John 10:29-30
And this is the will of him who sent me, that I should lose nothing of all that he has given me, but raise it up on the last day. - John 6:39
Will Christ lose any that have been given Him? No. Trying to add a condition to it makes Christ a liar.