As to Mary – we know she is in Heaven (indeed assumed body and soul). As to what she knew on earth --such is not told us --though she would have had the certitude of hope …and she knew well Jesus her son and the Lord.
As to “do we?”
I seek to live looking forward to the Resurrection! In the Joy of Knowing Christ Jesus my Lord. Rejoicing in already beginning to know true life in him.
(Now could I turn away from Christ before I die…rejecting in effect the life he gave me in Faith and Baptism (and all the other ways) and die in choice? --yes such is a possibility. May I remain living in Christ always!)
By the grace of God I intend to remain in Christ…a branch on his vine …to “abide in him” …to not be “cut off” (by my own choice)…(John 15:5-6, and Romans 11:22).
And if in this life I should unhappily commit a mortal sin…I intend to call out to the Good Shepherd and go to those whom he has given the authority to forgive me…to be forgiven and returned to life (John 20:22-23). I pray that I may always remain in him and thus leave this life remaining in life.
We walk by Faith not by sight (2 Cor 5:7)
and are saved in hope (see Romans 8:24)…and thus I have the great “certitude of hope”!
A real kind of assurance I have. A very real confidence. I do not though have “infallible” certitude. For example I do not know that I will in fact remain living in Christ and not betray him and die separated from him. And even now I could commit a mortal sin (Lord preserve me from this!). Indeed Jesus even said that not everyone who says to him “Lord Lord” will enter the kingdom of Heaven. (Matt 7:21)
But I have a great confidence in Christ my hope!
*I know in whom I have believed *(2 Tim 1:12)
My Faith and my hope and trust is in the Lord Jesus Christ! The Good Shepherd!
In him is* true life*.
Pope Benedict XVI:
Moreover, our radical belonging to Christ and the fact that “we are in him” must imbue in us an attitude of total trust and immense joy. In short, we must indeed exclaim with St Paul: “If God is for us, who is against us?” (Rom 8: 31). And the reply is that nothing and no one “will be able to separate us from the love of God in Christ Jesus our Lord” (Rom 8: 39). Our Christian life, therefore, stands on the soundest and safest rock one can imagine. And from it we draw all our energy, precisely as the Apostle wrote: “I can do all things in him who strengthens me” (Phil 4: 13).
Therefore, let us face our life with its joys and sorrows supported by these great sentiments that Paul offers to us. By having an experience of them we will realize how true are the words the Apostle himself wrote: “I know whom I have believed, and I am sure that he is able to guard until that Day what has been entrusted to me”; in other words, until the Day (II Tm 1: 12) of our definitive meeting with Christ the Judge, Saviour of the world and our Saviour.
(From:
vatican.va/holy_father/benedict_xvi/audiences/2006/documents/hf_ben-xvi_aud_20061108_en.html)