यदृच्छया चोपपन्नं स्वर्गद्वारमपावृतम्।सुखिनः क्षत्रियाः पार्थ लभन्ते युद्धमीदृशम्॥
yadṛcchayā copapannaṃ swarga-dvāram apāvṛtamsukhinaḥ kṣatriyāḥ pārtha labhante yuddham īdṛśam
Word by word
The verse says
Lucky are the warriors who get a fight like this one, Arjuna — arriving unasked, an open door.
In plain words
A hard verse to like, and it should be read for what it says.
Krishna calls this war a piece of good fortune. An open door, arriving unsought.
He is speaking in the language of a warrior's code, from inside it, to a man raised in it.
Where you've felt this · in sport
An old climber describes the storm that nearly killed him as the best thing that happened to him. You do not have to agree. You can hear that inside his world the sentence is coherent.
Going deeper
This is one of the verses where a reader is owed candour rather than management.
Taken plainly, Krishna is saying that a righteous war is an opportunity, and that dying in one opens the higher worlds. That is the warrior ethic of the society the poem came from, and the Gita states it without embarrassment.
Two things are worth holding alongside it.
First, yadṛcchayā — unsought. The verse is not praising war-seeking. The whole point is that Arjuna did not go looking for this; every attempt at peace failed first. What arrives unasked is being distinguished from what is chased.
Second, and more important, Krishna abandons this line of argument himself. Verses 31 to 37 appeal to duty, honour, reputation and heaven — and at verse 38 he drops all of it, and from 39 onward builds something completely different. By 2.47 the motive of heavenly reward has been removed outright.
So these verses are not the Gita's final word. They are a teacher using what his student already believes, on the way to somewhere his student does not yet believe.