Passage
And my spirit was glad on God my Saviour,
And my spirit was glad on God my Saviour,
Luke 1:45 and happy <FI>is<Fi> she who did believe, for there shall be a completion to the things spoken to her from the Lord.'
Luke 1:46 And Mary said, `My soul doth magnify the Lord,
Luke 1:47 And my spirit was glad on God my Saviour,
Luke 1:48 Because He looked on the lowliness of His maid-servant, For, lo, henceforth call me happy shall all the generations,
Luke 1:49 For He who is mighty did to me great things, And holy <FI>is<Fi> His name,
The verse centers on "Spirit", "glad", and "saviour". It is saying that the verse draws attention to "Spirit" and "glad", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 46's "And Mary said My soul doth magnify..." into verse 48's "Because He looked on the lowliness of...", so "Spirit" and "glad" belong inside that flow. In Luke context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "Spirit" and "glad" with trust shaped by these words, not by a vague optimism outside the passage.